/*	$OpenBSD: rf_mcpair.h,v 1.3 1999/07/30 14:45:32 peter Exp $	*/
/*	$NetBSD: rf_mcpair.h,v 1.4 1999/03/14 21:53:31 oster Exp $	*/

/*
 * Copyright (c) 1995 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Mark Holland
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

/*
 * rf_mcpair.h
 * See comments in rf_mcpair.c
 */

#ifndef	_RF__RF_MCPAIR_H_
#define	_RF__RF_MCPAIR_H_

#include "rf_types.h"
#include "rf_threadstuff.h"

struct RF_MCPair_s {
	RF_DECLARE_MUTEX(mutex);
	RF_DECLARE_COND (cond);
	int		 flag;
	RF_MCPair_t	*next;
};
#define	RF_WAIT_MCPAIR(_mcp)	tsleep(&((_mcp)->flag), PRIBIO, "mcpair", 0)

int  rf_ConfigureMCPair(RF_ShutdownList_t **);
RF_MCPair_t *rf_AllocMCPair(void);
void rf_FreeMCPair(RF_MCPair_t *);
void rf_MCPairWakeupFunc(RF_MCPair_t *);

#endif	/* !_RF__RF_MCPAIR_H_ */
